Essential oils are aromatic and volatile liquids extracted from flowers, seeds, leaves, stems, bark, fruit and roots of various plants. This is mostly achieved through a special distillation process. They are highly concentrated and have powerful healing properties thanks to their unique chemical constituents which depend on many factors like: soil condition, geographical region, altitude, climate, harvest season, method of distillation and parts of the plant from which the oil was extracted. Essential oil is the life blood of a plant and the most concentrated and powerful of all natural extracts. It is 75 to 100 times more concentrated than dried herbs. It is very costly to produce a pure, therapeutic essential oil. For example, one kilogram of pure Melissa oil can cost over $10,000 because six tons of plant material is needed to produce that one kilo.